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수록정보
수록범위 : 1권1호(1997)~2권1호(1998) |수록논문 수 : 29
BKESS
2권1호(1998년 /1월) 수록논문
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1ARTICLES : Aluminum Complexation and Precipitation with Seaweed Biosorbent

저자 : Hak Sung Lee , Young Tae Kim

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 1-8 (8 pages)

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Biomass of non-living brown seaweed Sargassum fluitans pretreated by different methods is capable of taking up more than 10% (11 meq/g) of its dry weight in aluminum at a pH of 4.5. It is indicated that the biomass sequestered the aluminum in the form of polynuclear aluminum species. The fraction of Al(OH)_(3) precipitated in the aluminum nitrate solution without biomass at pH 4.5 increased as the Al concentration increased. Aluminum-alginate complex precipitated in the solution as alginate was partially released from the biomass. External colloidal precipitate occurring in native and protonated S. fluitans biomass sorption systems caused a significant difference in Al sorption isotherms determined by standard and desorption methods, respectively. Sodium ions added for pH adjustment were not sorbed at all in the presence of aluminum ions.

2ARTICLES : The applicability of Freundlich's isotherm model for the leaching of solidified hazardous waste using comentitious binders

저자 : Jong Ho Youn , Heon Mo Lee , Byung Gon Jeong , Yong Hyun Chung

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 9-19 (11 pages)

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A laboratory study was conducted to investigate the immobilization of the laboratory waste sludge, mainly from chemical oxygen demand (COD) waste, using cementitious binders. The binders were: Ordinary Portland Cement (OPC), and lime-Rice Husk Ash (RHA) cement. The economic evaluation was done for three different kinds of cementitious binders, namely, OPC, Portalnd Rice Husk Ash Cement (PRHAC) which contained rice husk ash 50 percent by dry weight, and lime-RHA cement. The result showed that lime-RHA cement was the cheapest. The applicability of Freundlich`s desorption isotherm was studied to assess the leachability of sludges. The leachability of cement mortars was found to follow the desorption isotherms. Therefore, it was concluded that based on this test, the leachate concentrations of the solidified heavy metals could be predicted, approximately by the Freundlich`s isotherm desorption modeling.

3ARTICLES : Integrated Phytoplankton Data of the west Pacific Sector of the Southern Ocean : 140 - 148 。E transect

저자 : Hak Young Lee , In Sook Cho , Richard M . Greene , Jong Won Kim

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 21-28 (8 pages)

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A total of 94 taxa were identified from the Southern Ocean, 140-148 ˚E and 40-53 ˚S, as an early austral summer phytoplankton. They were 53 diatoms, 37 dinoflagellates, 2 silicoflagellates, 1 prymnesiophyte, and 1 coccolithophorid. Integrated cell numbers of nanoplankton dominated microphytoplankton from 8 stations, especially from Subantarctic zone, but integrated biomass was lower than microphytoplankton. Integrated cell numbers of diatoms dominated dinoflagellates, coccolithophorids, and prymnesiophyte, but integrated biomass of microphytoplankton were dependent to the biomass of dinoflagellates except north of the Subtropical convergence zone and south of the Antractic convergence zone. Phytoplankton community changed across the fronts and 3 different communities were observed. Fronts seem to influence on the phytoplankton community from the west Pacific Sector of the Southern Ocean.

4ARTICLES : Sediment Yield by Instantaneous Unit Sediment Graph

저자 : Yeong Hwa Lee

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 29-36 (8 pages)

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An instantaneous unit sediment graph (IUSG) model is investigated for prediction of sediment yield from an upland watershed in Northwestern Mississippi. Sediment yields are predicted by convolving source runoff with an IUSG. The IUSG is the distribution of sediment from an instantaneous burst of rainfall producing one unit of runoff. The IUSG, defined as a product of the sediment concentration distribution (SCD) and the instantaneous unit hydrograph (IUH), is known to depend on the characteristics of the effective rainfall. The IUH is derived by the Nash model for each event. The SCD is assumed to be an exponential function for each event and its parameters were correlated with the effective rainfall characteristics. A sediment routing function, based on travel time and sediment particle size, is used to predict the SCD.

5ARTICLES : Effect of Plant Hormones on the Invertase Activity in the Senescing Leaves of Phaseolus radiatus

저자 : Dong Hee Lee , Chin Bum Lee , Young Sang Kim

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 37-48 (12 pages)

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Effect of plant hormones on the leaf senescence of mung bean (Phaseolus radiatus) was investigated by measuring the changes of reducing sugar contents and invertase isozyme activities in detached leaves treated with NAA, GA_(3) or BA. During dark-induced senescence, reducing sugar contents in the detached leaves increased temporarily at 4 d, thereafter decreased rapidly and reached minimum values within 7-14 d. The pattern of soluble acid invertase activity in the senescing leaves kept in the dark was similar to that of reducing sugar accumulation, whereas the activities of alkaline and extracellular invertases were not significantly changed during leaf senescence. Therefore, these results suggest that soluble acid invertase, but not alkaline and extracellular invertases, induces the accumulation of reducing sugar during leaf senescence of mung bean plants. Exogenous NAA application had little or no effect in the increase of soluble acid invertase activity during dark-induced senescence compared to the control. However, exogenous applications of GA_(3) and BA led to the increase of soluble acid invertase activity in the senescing leaves. Particularly, BA application was very effective in enhancing the activity of soluble acid invertase as well as in delaying chlorophyll breakdown during dark-induced senescence. These results suggest, therefore, that BA regulates the activity of soluble acid invertase, which leads to the accumulation of reducing sugar, and the stability of photosynthetic apparatus to delay leaf senescence.

6ARTICLES : Effective Local Exhaust Ventilation on Cooking Fumes of Seasoned Meats

저자 : Byeong Kyu Lee , Michael J . Ellenbecker

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 49-56 (8 pages)

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This study identified the fumes produced from the cooking of the seasoned meats containing various condiments such as garlic, onion, pepper, soy sauce, and sesame oil. Concentrations, at the breathing zone of the cook, of volatile organic compounds (VOCs) and aldehydes included in the cooking fumes of seasoned meats were identified. Many chloro-and fluoro-aliphatic hydrocarbons, aromatic hydrocarbons, ketones, and aldehydes, which could be carcinogen suspecting chemicals, were producing from the cooking fumes of the seasoned meats. This study also identified the ventilation efficiencies of the cooking fumes of the six exhaust ventilation systems, which were widely being used in the general apartments, houses, and small-food factories. For a comparison of the ventilation efficiencies of the systems, acetaldehyde was chosen as a marker pollutant and its concentrations at the breathing zone of the cook were identified. The laboratory fume hood showed the best ventilation efficiency of the six ventilation systems studied, and then the lateral hood ventilation and the down draft ventilation followed the laboratory fume hood. Finally, this study identified that both a wall factor nearby pollutant sources and a distance factor between the hood face and pollutant sources should be also considered for an effective local exhaust ventilation system design.

7ARTICLES : The High Performance Liquid Chromatography ( HPLC ) Analysis of Polycyclic Aromatic Hydrocarbons ( PAHs ) in Oysters from the Intertidal and Subtidal Zones of Chinhae Bay , Korea

저자 : Ki Seok Lee , Il Noh , Cheol Soo Lim , Su Dong Chu

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 57-68 (12 pages)

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Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous contaminants in marine environments. PAHs enter estuarine and nearshore marine environment via several routes such as combustion of fossil fuels, domestic and industrial effluents and oil spills. PAHs have been the focus of numerous studies in the world because they are potentially carcinogenic, mutagenic, and teratogenic to aquatic organisms and humans from consuming contaminated food. However, one can hardly find any available data on PAH content in marine organisms in Korea.  The present study was carried out in order to determine PAH content in oysters from the intertidal and subtidal zones of Chinhae Bay, which is located in near urban communities and an industrial complex, and the bay is considered to be a major repositories of PAHs. 16 PAHs were analyzed by High Performance Liquid Chromatography (HPLC) with uv/vis and fluorescence detectors in oysters: they are naphthalene (NPTHL), acenaphthylene (ANCPL), acenaphthene (ACNPN), fluorene (FLURN), phenanthrene (PHEN), anthracene (ANTHR), fluoranthene (FLRTH), pyrene (PYR), benzo(a)anthracene (BaA), chrysene (CHRY), benzo(b)fluoranthene (BbF), benzo(k)fluoranthene (BkF), benzo(a)pyrene (BaP), dibenz(a,h)anthracene (DahA), benzo(g,h,i)peryne (BghiP) and indeno(1,2,3,-cd)pyrene (I123cdP). The PAH contents in oysters from the intertidal and subtidal zones of Chinhae Bay ranged from < 0.1 to 992.0 ㎍/㎏ (mean 69.8 ± 9.8 ㎍/㎏).

8ARTICLES : Study on the chemical forms of heavy metals in the surface sediments of Ulsan Bay

저자 : Young Bok Kim , Sun Young Jo , Jong Hak Jeong , Sung In Lee , Gi Ho Jeong

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 69-78 (10 pages)

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Contents of heavy metals (Cr, Cu, Zn, Cd, and Pb) in the sediments of Ulsan Bay were investigated by the sequential extraction methods that classifies heavy metals into five types of chemical forms: exchangeable, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter and residual. The analytes were determined by using an ICP-MS. Total Cr concentrations in the sediments were in the range of 41.6-96.4, Cu 60.7-680, Zn 189-1954, Cd 33.1-83.4, and Pb 138-567 ㎎/㎏. Results of sequential fractionation indicates that relatively high proportion (~44%) of Cu is associated with organic matter. A large proportion of Pb is associated with three types of chemical forms: Fe-Mn oxides, organic matter, and residual. There were significant correlation in concentrations between the exchangeable components and total organic carbons. The heavy metals in the residual phase cannot be easily released to the environment since these are bound to the crystal lattice. But, reducible and organic phases carry a significant amount of most heavy metals. Therefore, there is potential danger of a substantial amount of metals becoming chemically mobile with environmental changes.

9ARTICLES : Absorption of Carbon Dioxide into Aqueous AMP Solutions

저자 : Won Seob So , Dong Soo Suh , Moon Ki Park

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 79-84 (6 pages)

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The rates of absorption of carbon dioxide into aqueous solutions of 2-amino-2-methyl-1-propanol (AMP) were measured using a semibatch stirred vessel with a plane gas-liquid interface at 25℃. The absorption rates under the fast reaction regime were analysed using chemical absorption theory. The reaction was found to be first order with respect to both CO₂ and the amine.

10ARTICLES : Kinetics of CO2 Absorption in Aqueous AMP ( 2-amino-2-methyl-1-propanol ) Solutions

저자 : Moon Ki Park

발행기관 : 한국환경생물학회 간행물 : BKESS 2권 1호 발행 연도 : 1998 페이지 : pp. 85-90 (6 pages)

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The reaction rate of CO_(2) with 2-amino-2-methyl-1-propanol (AMP), MEA monoethanolamine (MEA) and diethanolamine (DEA) in aqueous solutions has been determined using a stirred vessel with a plane gas-liquid interface over a wide range of concentrations of amines at different temperatures. The results show that the overall reaction rate is first order with respect to both CO_(2) and amine. The reaction rate constant varies with temperature according to the relationship which agrees with the experimental data. The proposed interpretation is that the kinetic rate determining step is a reaction of CO_(2) with amine to form carbamic acid which is then totally and immediately ionized.

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